Dizziness and nausea are the most common symptoms of heatstroke, patients should be allowed to stop activities immediately, unbuttoned, remove excess clothing and assist patients to move to a cool, ventilated place. 1. First of all, give the patient cooling: can let the patient in a cool ventilated place to lie down, and in the head and trunk position to be placed in a wet cool towel to cool down, or will be wrapped in ice packs of thin towels placed in the patient’s groin, temples, armpits and other large blood vessels travel place. Remember not to directly touch the ice bag to the skin to prevent frostbite. 2. Appropriate rehydration can be given to the patient: in the patient’s consciousness and state allows the case, can be appropriate to give containing electrolyte fluid. When the patient’s consciousness is not clear, the symptoms are more serious, need to be given through the vein rehydration, this time should be sent to the doctor in a timely manner. 3. If the patient who initially showed mild symptoms still feels dizzy and nauseous after a period of rest, or if the patient’s symptoms worsen with spasms or unconsciousness, the patient should be sent to the nearest hospital with the ability to save the patient’s life as soon as possible. In the process of transportation to the hospital to maintain bilateral lower limbs slightly elevated unconscious position, at the same time should pay attention to observe the patient’s respiratory situation. In the event of heat stroke, please stop working immediately and rest in a cool and ventilated place. If the symptoms do not improve significantly, please seek medical treatment promptly and under the professional guidance of a doctor.